STUDIES ON TREATMENT OF URANIUM ORES. I. LEACHING OF URANIUM ORE FROM THE MATSUIWA MINE

Journal Article · Sat Aug 01 04:00:00 EDT 1959 · Sci. Repts. Research Insts., Tohoku Univ., Ser. A

OSTI ID:4082534

Sudo, K; Kigoshi, A

Studies were made of several processes of extracting uranium from the uraniferous ore of the Ryusei pit Matsuiwa Mine, Miyagi Prefecture, assaying 0.081% uranium. Three series of experiments were carried out: pressure oxidation leaching of the uranium ore in carbonate solutions containing gaseous oxygen; leaching the roasted ore in sulfuric acid; and pressure and atmospheric oxidation leachings of the ore in acids. The results obtained showed that the atmospheric oxidation leaching with dilute sulfuric acid was an attractive method for extraction of uranium from such low grade ore. By this method over 96% of the uranium, together with some copper, and from 0.3 to 2% of the iron were extracted at 60 deg C in 6 hr. The same results were obtained with nitric acid. Atmospheric leaching in water with oxygen recovered over 80% of the uranium. (auth)

• Research Organization: Research Inst. of Mineral Dressing and Metallurgy, Japan
• NSA Number: NSA-15-011031
• OSTI ID: 4082534
• Journal Information: Sci. Repts. Research Insts., Tohoku Univ., Ser. A, Journal Name: Sci. Repts. Research Insts., Tohoku Univ., Ser. A Vol. Vol: 11
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ATMOSPHERE
CARBONATES
CHEMISTRY
COPPER
DEPOSITS
GASES
IRON
JAPAN
LEACHING
MINING
NITRIC ACID
OXIDATION
OXYGEN
PRESSURE
SOLUTIONS
SOLVENT EXTRACTION
SULFURIC ACID
TEMPERATURE
URANIUM
URANIUM ORES
WATER